IF Frequency Response Check Utility

This utility applies to the following models:

This procedure should only be performed on EMI receivers that are equipped with Option WF1 (Wideband Digital IF). The intent is to detect if the IF Frequency Response Adjustment needs to be run.

In this procedure, a test signal of –10 dBm is applied to the DUT. A reference amplitude is taken at the center frequency. The source frequency is then changed to a series of offset frequencies within the span of interest. At each offset frequency the source amplitude is maintained at –10 dBm, and the amplitude is measured by the DUT. The test is performed in Band 0.

Related adjustment: IF Frequency Response Adjustment

Required Test Equipment

Test Equipment

Model Number1

Microwave Signal Generator

PSG Models
(see equipment list)

Power Meter

N1914A

Microwave Power Sensor

  • 2 required
  • For Options < 544

N8485A CFT

Microwave Power Splitter

  • For Options < 544

11667B 

Millimeter Power Sensor

  • 2 required
  • For Option 544

N8487A CFT

Millimeter Power Splitter

  • For Option 544

11667C

Cable, BNC

8120-1840 

Cable, coaxial 3.5 mm

  • For Options < 544

11500E

Cable, coaxial 2.4 mm

  • For Option 544

8120-6164

Adapter, Type-N (m) to 3.5 mm (m)

  • For Options < 544

1250-1743

Adapter, 3.5 mm (f) to 3.5 mm (f)

  • Required with Options < 544 when using a 3.5 mm source

83059B

Adapter, 2.4 mm (f) to 3.5 mm (f)

  • Required with Options < 544 when using a 2.4 mm source

11901B

Adapter, 3.5 mm (f) to Type-N (m)

  • 8485A adapter

08485-60005

Adapter, 2.4 mm (f) to Type-N (m)

  • 8487A adapter

08487-60001
  1. Refer to the main Required Equipment table for a list of alternative models.

Connection Setups

Power Sensor Calibration

Splitter Characterization

IF Frequency Response Setup